New User! Questions About Blitz Sbc Type S

[Sic1978]

Hi guys, newbie from the UK here.

I imported my own r33 skyline from japan last year, so far ive swapped the exhaust out 3" from the turbo back, fitted GTR intercooler, all strut braced and roll barred out with whiteline bits.

Now ive got the handling sorted out im very pleased with the car.

Now then to tap you guys up for some information

I have a blitz sbc type s (single solenoid with the dinky lil finger conntroller)

I cannot get it to behave itself for love nor money.

Im not after mega figures just a stable 10 psi ish.

Now then im currently playing with 2 setups. My low is currently set 35, gain 5, p gain 0 which i know isnt great i get around 9.5 psi of boost but it does drop off a bit.

My high setup is something like set 30, gain 20, p gain 15. That is a bit off its head in 4th and 5th it gets 9.7 and kindo holds but in lower gears im getting spikes up to 11.1 which obviosly sets my warn and back off (20) off and never hits high boost correctly.

Im basically fairly sure my engrish manual is.......weeeelllllll vague.

If i follow the manual i set my boost (35) then adjust gain to allow the turbo to spool and thats it overboost as soon as i put 5 in.

I cannot find anybody else's settings for love or money, or even if im doing it right. Its all just sooooooooo vague!!

Am i to expect a certain amount of overboost?

Any help/example settings gratefully recieved!

[Sic1978]

Also i unfortunately dont live anywhere near anyone who knows skylines or this type of tuning.

[hardsteppa]

wrong forum dude, try forced induction.

not as widely-used a boost controller as the greddy profec but if the settings are anything similar (which they may well not be), make the duty cycle (which is probably called 'set', to whatever needed to reach your desired boost - generally a percentage of stock wstegate pressure, eg 20% on a 10psi wastegate should make 12 psi). Then increase gain to make it stable across rpm range and not spike or fall off at upper rpms, then 'p gain' might be same a 'start gain' setting, eg holding w/g closed to speed up spool, so st this as high s possible without causing a boost spike when it comes on boost.

etc.